Locomotive-arch.



LE GRAND PARISH.

LOCOMOTIVE ARCH.

APPLICATION FILED FER. n, 191e.

Ptented J une 12, 1917.

LE GRAND PARSH.

mee,eem v a citizen of theUnie resicling et Mountaimiew, Pssseic oeuntgz, New Jersey, a a

have mvented oertam newmnd useml m provemncs in and for LocomotiveArches, cf whioh :bhe ollowing :is a speeificaiiom.

- My invention relates to impovements in refractory front areh oonsuofizions foi1oo- Ihotiveboiler fireboxes The object ef m:v inention'isito improve the shapes, con: struetion, and operatioi1 of the eomponent bricks ol snob arches. A speeiel objeelt 03'.

the invention is to improve the form and construction of the socalled body bricks of refractory arches; and to provi l soealled merginel.;,er raide-bricks ol improved form a'nd construction for oopemtion with suoh bodybricks.

The gemml clmrm:ieriHtics of my inventien as well as the detils thereofwill be radily understood ou reference in the draviings thai form parts of tl 1is speeification, and in whleh Figure 1 is a longitudinalsetien ci a locomotive boiler fire)ox equipped With a front a1ch embo lying my invention:

,Fig. '2 a seezionnl view oi"one of the bodybrioks on the line K-K of Fig. 3; Fig. 3 is on enlargzed transverse section clis elosing n,lirebox skis shoei5, -WO Woerireulating EUCl1 tub.s :mfl body and nmrginnl bricks thereon; i*igu i le a, vertical section of the bricks shown in Fig, 3; Fig. 5 is en in vertu] plzm view or. one 01: the zzrclvbodybricks, rotlueed in sizeFig. 6 is an end view o:l" l he boclyinrick; Fig. 7 asimilurly redneed invered plan view o' one of ihe marginal bricks; Fig; 8 is:m im1er end view thereoljan l Fig. 9 is :1 detail showing o shift o'l position ol the bod5 b1i0k upon the ureh tube.

Referring to Fig 1 of Lhe ilmwing, the lines Whioll 1eprosent ll1e grate of the fir box are marked il; :9, is i l1e rein sheet of the firebox; 3, is the lime sheet; 4:, is the orown shoot; 5, the side shoots; 6, the door of the firebox; 7, an mch-tuhe; and 8, me

Tlie watef circulating arcli-tube, 7, .KiJend longitudinully anl are inclined in ilie hrebox, and are spuced. epert tsarisversely ti1ereie. Between eneh 7, thme is a long1fluliiml row of b0dy brick, A; and botween il1e outermosu row of borly brieltsunci ezzoh side sheet, 33, there is a. row oi marginal. bricks B.

, The novel bricks, which prmarily eom prise my invention, are of shapes and constructions which give tl1em edequaze sirength, whieh cause them to act properly and reliably with relation to one anol1ex, and which couse them to firmly retain their positions open their supports. hey have the further ehomefieristio ofbeing reversiiole ai1ci invertible.

As allof the bodgfibxicks, A, are of'the same slmpe or form', a description of one Will serve for ail. Lilwise, the marginal bricks, B, are oll alike and a descripiion' 015 one will serve for all.

lihe over-all length of the body-brick, A, is substantinily the same as the distance between the centers of the arch cubes? 7, Which support it. Each (and of the brick, A, is formed with, or centaine, 21 socket, a5, sheped fco fit on areh tube, '3', in the nommer shown. These sockets, a, a, are diagonally opposite one :motl1er in the brick so that one is presented upwardly in one end and the other downwardly ut tl1e other end. Directly opposed to each socket is on inolinecl portion, a the major part of which is strnight (in the'longituclinul section of the brick) while a miner o r terminal position,-a", is curveci, a sl1orp corner being avoied, FOI he ptiipoSeS hereinafter ex pluinel. The top and botizoin surfaces a ond a*, :xr e purullel planes. In the wall of eaeh sOcket, a, li preier to form a recess, a, whioh terminales short of the sideS of the brick and. also terminates short of' the end of tlie brick. in this manner twobeering surfaces, a, are provided to eonform with the side and top of the aroh tube ind un extended edgebeering, a is formeclf0flr en gagement with the top of the tube. Usu ally the brick wi1l beboth rednced in weight and increased in strength by the formation (if reeesses, a in one or both surfaces, a, a, ns indicad .by full and dotted limes in Fig. 4:. These recesses me so formed as to 100.

be substantially symmetrical, not the brick itself, but with respect to an imaginary areh lino, 9,springimg from the celliers of the tubes, 7. In this m&nner the thiek central portion, a", and the intermediate tliii1 portions of the brick are made to best ooeet to prevent fracture of the brick et tue conter. Il Will be noted thai. the parts,

(5, provide two widely ,separzteclbeeflngs 'ior ihe 'socketei and of the brick-open its' 11,0;

the inclined surfaces, a as-indicated by uil fines, in Fig. 3, and by t-he curved line, (1. in the scctional Fig. 2. bviousiy the contact between the curved surface, a, and the supporting tube is limited to a substantially single point, a 'Very little curvature ,of

the surface, a is reqnired to eccomplish ibis end. It Wiil be clear that the bodybrick is invertible upon the tubes, 7, and

is also reversibie, end for end, npon tl 1e .Lts form allows 1t to act m arch bubes, 7. one position as well in the other,

For co-aczron w1th .he s1de sheets, 5, et

the firebox and to occnpy the spece between the same and -he adjacent body-brick, A,

provide a marginal brick, B, of the form well shown in F-igs. 3, 4, 7 and 8. This brick is chiefiy characterized by a semi cyiind2icnl nner end, proportioned o fit be socket, (:1, of the bndy;brick, A. Obvionsiy, the end shapes o ihe two bricks permit the marginal brick in assume various inclined posiions With respect to the bodybrick. This is required in order thet the body-brick mey antometicaily edjust its;elf t0 difi'erent spncings becween the enter arch tube, 7, and the side sneet, 5. To ecilisete snob ad;usmcn wfcer :hc brick is in position for tbe furtner purpose of making the brick invertibie, I make the outer end of the brick, B, to conform to two semi-cyiindrical surfaces, b", b Which meet et the Iniddie of the brick, ewing a single point, 5 for engagement witi; the side shcet, 5. The body-brick is bath lightened' and strengthened by pioviding it with reeesses,

b, in one or both sides. On the end of the br1ck, B, i. prowde a progectton or saop, I), of iengeh :50 be accommodated in. the re- 'cesses, ai, in the*socket of the body-bricln The 111g or stop, Z)", nmybe a. singie projec tien 01' may be divided into'tno parts, as siiown in Fig. 7. I prefer the two projections as they permit -he straddiing oi tbe rick, B, across he cnds of two bodybricks, A, ne indicated by doctcd "fines, 10, in Fig. 7. 'he oflice of the stop, b is to prevnt bile dispiacement of the brick B, from the socl:et of the body-brick, and it performe .5bis office in conjunction with the projections, a., and aiso in conjnnction Wibh the ridge, ar. The bearing or ridge, c, serves as a iimiting stop for the nerrow ing, b, on he brick, B, and prwents the inner end bhereof rom siipping she bod-brick.

, le Wi1i ne noter! (net the end of the bodbrick, A, Wnicb serves es an adjnstable abufiment for tbe merginai brick, B, is frly sidabie on the outer arch tube, 7, due to its inclined end. The opposite end of the bodybrick is firmly abutted &gainst the inner arch tube, 7. Any endwise movement imperted to the brick,A, by the werping of the inner erch tubes, 7 in obviously'ccmmunicnted t0 the nmrgfinal brick, B, which eutometicefly adjusts itself against theside sheet, 7. And reversely, the inwerd movement of the marginalbrick,B,is commnnica.ted to the body brick, A, in abufiment therewith. Such movements of the two bricks cause the' same to rise and. fali upon and with respect to the outer arch tube, 7. As long as the major straight portion, (5*, of the inclinedend, is in engagement With the side of the erch tube,

there slight danger of dislodgment or dis-' arrangement on the tube,but, when the brick or the tube shifts its position in the manne:- depicted in Fig; 9, 'the danger is increesed. Hence the provision -of the curved srfnce on the end of the brick, A.I'

This curved and allows the'brickito setfle and to more tightiy wedgeegeinst the tabe 7, and thus counteract the breakingzefiect 0 the vibration'of the brick onthe 'Ichtube and minimize the ebmsivegtiQn of theg:

brick upon the tube. u

I Will be found thefi; fire'brcksof h.e forms, A, and, B, are extremely strong, due to tbe dispos1fion of the materialin the menner shown;which disposition insures the uniform bnking or fixing of the bricks in the kiki, and obviats Ehe (:heckingand cracking of the bricks during the firing process. The bricks are especmlly adven- .tageous beceuse they are -free from sharp anged corners which are api; to be broken Wben the bricks are in 'ransitor are being piled or otherwise handled. ,fi:

A correct idea of tbe sizes of tbe bricks will be gained from the stafement that even the large body bricks are of a si ze permitting them to be pessed through the fue} door, 6, of the firebox.

Having thns described myinvefition, I daim as new and desire to secure by Letters Patent 1. A. locomotive firebox arclnbody-brick, having diagonuliy opposed socketed end in combination with &rch tubes supporting said ends, {L firebox side sheet adjacent one of said tubes and a marginal brick having its inner end shcped to fit the opposed sockct of the body-bnek and held therein while its outer end rests against said side sheet, as and for the purposes dscribed.

' the purposes described.

5. An arohbod-brick hu ving diagonnlly provided with dagonal y opposed inolined ond surfaces, each sa1d mlmed surface be- 1ng trans'versely curved, as and for the purposes deScribed.

4. An arch-body-brick having cligonally opposed arch tube sockets in1ts ends and also provided With dagonally opposed inclined 'end surfaces, each sad socket containing a redess and each said inclined surface being transversely curved, us and for opposed a1ch tube sockets 1n its ends and also provided with diagonally opposed in- ,chned suriaces, and a curved surface, a",

merging each inclined surface With the respective extreme end 01":. the brick, us and for the purposes descnbed.

tube socket in the upper corner of the outer end and containing a stop recess, in combin; tien with a margmal brick bwing a particy1indrcal end fitting said socket; and having a stop lug accommofluted by the recess thorein, as and for the purposes described.

8. A marginal a1ch brick having a semiforming to interseeting semi-cflindrical surfaces, a5 and fol the purposs spcified. 9. A marginal arch brick having a semicyhndrical inner end provided with a stop lug or projection, us and for.tl e purposes specified. V

10; An arch-body-bfick having diagonally op'posed inclned ends and diagonally opposed arch tube Sockets and provided with recesses, a5, nonsymmetrically positioned in the brick, us and for the purposes speoified.

11. An urch-body-brick huving on in olined wedging and comprising a straight portion, (E, and a curved portion, cg", and said cylindrioal fumer end, and an enter end conoortion a? ben trnnsmrscl curved as and 9 D 9 for the purposes speoified.

In .testimony whereof, I have hereunto set my hand this 31 day of J anuary, 1916.

LE GRAND PARISH. 

